On Thu, Jan 23, 2014 at 12:22:43AM -0800, Tim Fall wrote:
 Running libguestft-test-tool yields:
 
 
      ************************************************************
      *                    IMPORTANT NOTICE
      *
      * When reporting bugs, include the COMPLETE, UNEDITED
      * output below in your bug report.
      *
      ************************************************************
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
 SELinux: sh: 1: getenforce: not found
 library version: 1.22.4
 guestfs_get_append: (null)
 guestfs_get_backend: direct
 guestfs_get_autosync: 1
 guestfs_get_cachedir: /var/tmp
 guestfs_get_direct: 0
 guestfs_get_memsize: 500
 guestfs_get_network: 0
 guestfs_get_path: /usr/lib/guestfs
 guestfs_get_pgroup: 0
 guestfs_get_program: libguestfs-test-tool
 guestfs_get_qemu: /usr/bin/qemu-system-x86_64
 guestfs_get_recovery_proc: 1
 guestfs_get_selinux: 0
 guestfs_get_smp: 1
 guestfs_get_tmpdir: /tmp
 guestfs_get_trace: 0
 guestfs_get_verbose: 1
 host_cpu: x86_64
 Launching appliance, timeout set to 600 seconds.
 libguestfs: launch: backend=direct
 libguestfs: launch: tmpdir=/tmp/libguestfsH1o0hZ
 libguestfs: launch: umask=0022
 libguestfs: launch: euid=0
 libguestfs: command: run: supermin-helper
 libguestfs: command: run: \ --verbose
 libguestfs: command: run: \ -f checksum
 libguestfs: command: run: \ /usr/lib/guestfs/supermin.d
 libguestfs: command: run: \ x86_64
 supermin helper [00000ms] whitelist = (not specified), host_cpu = x86_64,
 kernel = (null), initrd = (null), appliance = (null)
 supermin helper [00000ms] inputs[0] = /usr/lib/guestfs/supermin.d
 checking modpath /lib/modules/3.11.0-15-generic is a directory
 picked vmlinuz-3.11.0-15-generic because modpath
 /lib/modules/3.11.0-15-generic exists
 supermin helper [00000ms] finished creating kernel
 supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d
 supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d/base.img
 supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d/daemon.img
 supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d/hostfiles
 supermin helper [00024ms] visiting /usr/lib/guestfs/supermin.d/init.img
 supermin helper [00024ms] visiting
 /usr/lib/guestfs/supermin.d/udev-rules.img
 supermin helper [00024ms] adding kernel modules
 supermin helper [00036ms] finished creating appliance
 libguestfs: checksum of existing appliance:
 9b64713489581d48f30dd83cc66458a1ef2d1a86dbc27d385cac945d7491f121
 libguestfs: [00040ms] begin testing qemu features
 libguestfs: command: run: /usr/bin/qemu-system-x86_64
 libguestfs: command: run: \ -nographic
 libguestfs: command: run: \ -help
 libguestfs: command: run: /usr/bin/qemu-system-x86_64
 libguestfs: command: run: \ -nographic
 libguestfs: command: run: \ -version
 libguestfs: qemu version 1.5
 libguestfs: command: run: /usr/bin/qemu-system-x86_64
 libguestfs: command: run: \ -nographic
 libguestfs: command: run: \ -machine accel=kvm:tcg
 libguestfs: command: run: \ -device ?
 libguestfs: [00145ms] finished testing qemu features
 [00145ms] /usr/bin/qemu-system-x86_64 \
     -global virtio-blk-pci.scsi=off \
     -nodefconfig \
     -nodefaults \
     -nographic \
     -device virtio-scsi-pci,id=scsi \
     -drive
 file=/tmp/libguestfs-test-tool-sda-r1GMFw,cache=none,format=raw,id=hd0,if=none
 \
     -device scsi-hd,drive=hd0 \
     -drive
 file=/var/tmp/.guestfs-0/root.2492,snapshot=on,id=appliance,if=none,cache=unsafe
 \
     -device scsi-hd,drive=appliance \
     -machine accel=kvm:tcg \
     -m 500 \
     -no-reboot \
     -no-hpet \
     -device virtio-serial \
     -serial stdio \
     -device sga \
     -chardev socket,path=/tmp/libguestfsH1o0hZ/guestfsd.sock,id=channel0 \
     -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \
     -kernel /var/tmp/.guestfs-0/kernel.2492 \
     -initrd /var/tmp/.guestfs-0/initrd.2492 \
     -append 'panic=1 console=ttyS0 udevtimeout=600 no_timer_check acpi=off
 printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0
 guestfs_verbose=1 TERM=xterm'\x1b[1;256r\x1b[256;256H\x1b[6n
 Google, Inc.
 Serial Graphics Adapter 06/09/13
 SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (buildd@allspice)
 Sun Jun  9 17:23:53 UTC 2013
 Term: 80x24
 4 0
 SeaBIOS (version 1.7.3-20130708_231806-aatxe)
 Booting from ROM...
 \x1b[2J[    0.000000] Initializing cgroup subsys cpuset
 libguestfs: error: appliance closed the connection unexpectedly, see
 earlier error messages
 libguestfs: child_cleanup: 0x19a9580: child process died
 libguestfs: sending SIGTERM to process 2502
 libguestfs: error: guestfs_launch failed, see earlier error messages
 libguestfs-test-tool: failed to launch appliance
 libguestfs: closing guestfs handle 0x19a9580 (state 0)
 libguestfs: command: run: rm
 libguestfs: command: run: \ -rf /tmp/libguestfsH1o0hZ 
Certainly looks like qemu is crashing.
If you enable core dumps, do you get any core files, and which process
is core dumping and what is the stack trace?
libguestfs-test-tool works for me, with:
  seabios          1.7.3-1
  qemu             1.5.0+dfsg-3ubuntu5.2
  libguestfs-tools 1:1.22.4-1ubuntu1
  vmlinuz-3.11.0-15-generic
Which qemu & kernel are you using?
Rich.
-- 
Richard Jones, Virtualization Group, Red Hat 
http://people.redhat.com/~rjones
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine.  Supports Linux and Windows.
http://people.redhat.com/~rjones/virt-df/